package com.example.syd.coolweather.service;

import android.app.ProgressDialog;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import com.example.syd.coolweather.MainActivity;
import com.example.syd.coolweather.R;
import com.example.syd.coolweather.WeatherActivity;
import com.example.syd.coolweather.db.City;
import com.example.syd.coolweather.db.County;
import com.example.syd.coolweather.db.Province;
import com.example.syd.coolweather.util.HttpUtil;
import com.example.syd.coolweather.util.Utility;
import com.google.gson.annotations.Until;

import org.litepal.crud.DataSupport;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Response;

/**
 * 作者: created by syd on 2018/4/13 10:40
 * 邮箱: sunyuandong@mujinkeji.com
 */
public class choose_AreaFragment extends Fragment {
    public static final int LEVEL_PROVINCE = 0;
    public static final int LEVEL_CITY = 1;
    public static final int LEVEL_COUNTY = 2;

    private ProgressDialog progressDialog;
    private TextView titleView;
    private Button backButton;
    private ListView listView;
    /*适配器*/
    private ArrayAdapter<String> adapter;

    private List<String>dataList = new ArrayList<>();
    /*省列表*/
    private List<Province> provinceList;
    /*市列表*/
    private List<City> cityList;
    /*县列表*/
    private List<County> countyList;
    /*选中的省*/
    private Province selectedProvince;
    /*选中的市*/
    private City selectedCity;
    /*当前选中的级别*/
    private int currentLevel;
    private final static String TAG = "choose_AreaFragment";
    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        super.onCreateView(inflater, container, savedInstanceState);
        View view = inflater.inflate(R.layout.choose_area,container,false);
        titleView = (TextView)view.findViewById(R.id.title_text);
        backButton = (Button)view.findViewById(R.id.back_button);
        listView = (ListView)view.findViewById(R.id.list_view);
        adapter = new ArrayAdapter<>(getContext(),android.R.layout.simple_list_item_1,dataList);
        listView.setAdapter(adapter);
        return view;
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                if (currentLevel == LEVEL_PROVINCE){
                    selectedProvince = provinceList.get(position);
                    Log.d(TAG, "onItemClick: " + selectedProvince.getProvinceCode());
                    queryCitys();
                }else if (currentLevel == LEVEL_CITY){
                    selectedCity = cityList.get(position);
                    queryCounty();
                }else if (currentLevel == LEVEL_COUNTY){
                    String weatherId = countyList.get(position).getWeatherId();
                    /*instanceof 关键字判断某一个对象是否属于某类实例*/
                    if (getActivity() instanceof MainActivity){
                        Intent intent = new Intent(getActivity(), WeatherActivity.class);
                        intent.putExtra("weather_id",weatherId);
                        startActivity(intent);
                        getActivity().finish();
                    }else if (getActivity() instanceof WeatherActivity){
                        WeatherActivity weatherActivity = (WeatherActivity)getActivity();
                        weatherActivity.drawerLayout.closeDrawers();
                        weatherActivity.swipeRefreshLayout.setRefreshing(true);
                        weatherActivity.requestWeather(weatherId);
                    }

                }
            }
        });
        backButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (currentLevel == LEVEL_COUNTY){
                    queryCitys();
                }else if (currentLevel == LEVEL_CITY){
                    queryProvince();
                }
            }
        });
        queryProvince();
    }
    /*查询县级数据,优先从数据库查询,没有的话再去服务器上去取*/
    private void queryCounty(){
        titleView.setText(selectedCity.getCityName());
        backButton.setVisibility(View.VISIBLE);//可见
        Log.d(TAG, "queryCounty: " + selectedCity.getCityCode() + "----" + selectedCity.getId());
        countyList = DataSupport.where("cityId = ?",String.valueOf(selectedCity.getId())).find(County.class);

        if (countyList.size() > 0){
            dataList.clear();
            for (County county:countyList){
                dataList.add(county.getCountryName());
            }
            adapter.notifyDataSetChanged();
            listView.setSelection(0);
            currentLevel = LEVEL_COUNTY;
        }else {
            int provinceCode = selectedProvince.getProvinceCode();
            int cityCode = selectedCity.getCityCode();
            String address = "http://guolin.tech/api/china/" + provinceCode + "/" + cityCode;
            queryFromServer(address,"county");
        }
    }
    /*查询市级数据,优先从数据库查询,没有的话再去服务器上去取*/
    private void queryCitys(){
        titleView.setText(selectedProvince.getProvinceName());
        backButton.setVisibility(View.VISIBLE);//可见
        //Log.d(TAG, "queryCitys: " + selectedProvince.getProvinceCode() + selectedProvince.getId());
        cityList = DataSupport.where("provincedId = ?",String.valueOf(selectedProvince.getId())).find(City.class);

        if (cityList.size() > 0){
            dataList.clear();
            for (City city:cityList){
                dataList.add(city.getCityName());
            }
            adapter.notifyDataSetChanged();
            listView.setSelection(0);
            currentLevel = LEVEL_CITY;
        }else {
            int provinceCode = selectedProvince.getProvinceCode();
            String address = "http://guolin.tech/api/china/" + provinceCode;
            Log.d(TAG, "queryCitys: " + address);
            queryFromServer(address,"city");
        }
    }
    /*查询省级数据,优先从数据库查询,没有的话再去服务器上去取*/
    private void queryProvince(){
        titleView.setText("中国");
        backButton.setVisibility(View.GONE);
        provinceList = DataSupport.findAll(Province.class);
        if (provinceList.size() > 0){
            dataList.clear();
            for (Province province:provinceList){
                dataList.add(province.getProvinceName());
            }
            adapter.notifyDataSetChanged();
            listView.setSelection(0);
            currentLevel = LEVEL_PROVINCE;
        }else {
            String address = "http://guolin.tech/api/china";
            queryFromServer(address,"province");
        }
    }
    /*根据传入的地址和类型从服务器获取数据*/
    private void queryFromServer(String address,final String type){
        showProgressDialog();
        HttpUtil.sendOKHttpRequest(address, new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                e.printStackTrace();
                /*回到主线程处理逻辑*/
                getActivity().runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        closeProgressDialog();
                        Toast.makeText(getContext(),"加载失败",Toast.LENGTH_SHORT).show();
                    }
                });
            }
            @Override
            public void onResponse(Call call, Response response) throws IOException {
               String responseData = response.body().string();
               boolean result = false;
               if ("province".equals(type)){
                   result = Utility.handleProvinceResponse(responseData);
               }else if ("city".equals(type)){
                   result = Utility.handleCityResponse(responseData,selectedProvince.getId());
               }else if ("county".equals(type)){
                   result = Utility.handleCountyResponse(responseData,selectedCity.getId());
               }

               /*有数据*/
               if (result){
                       getActivity().runOnUiThread(new Runnable() {
                       @Override
                       public void run() {
                           closeProgressDialog();
                           if ("province".equals(type)){
                               queryProvince();
                           }else if ("city".equals(type)){
                               queryCitys();
                           }else if ("county".equals(type)){
                               queryCounty();
                           }
                       }
                   });
               }
            }
        });
    }
    /*限时进度对话框*/
    private void showProgressDialog(){
       if (progressDialog == null){
           progressDialog = new ProgressDialog(getActivity());
           progressDialog.setMessage("正在加载...");
           progressDialog.setCanceledOnTouchOutside(false);
       }
       progressDialog.show();
    }
    /*关闭进度对话框*/
    private void closeProgressDialog(){
       if (progressDialog != null){
           progressDialog.dismiss();
       }
    }
}
